The conventional progressive wisdom is that the Trump Administration will be bad for cities and for transit users. But in recent decades, a unified Republican government has been better for public transit than a divided government.

An efficient and equitable transport system must be diverse to serve diverse travel demands. Planners need better tools to quantify and communicate the benefits of walking, cycling and public transit to sometimes skeptical decision makers.

Chicago, Capital of Green Roofs?

Chicago City Hall boasts one of the world's most famous green roofs. As a result, the city has a reputation for being the capital of green roofs. But as architecture critic Blair Kamin notes from a bird's eye view, that's not exactly the case.

Kamin went to the observation deck of the Willis Tower, Chicago's tallest building.

"What I saw instead was this: About 10 green roofs, including a test model on the Tower's 90th floor. It's tied down with steel ropes to keep Chicago's howling winds from blowing it to the sidewalk.

That view is revealing: Ten years after Mayor Richard Daley had a lush, green roof planted atop City Hall, Chicago is North America's undisputed leader in covering roofs with vegetation. Yet the green roof movement in Chicago remains in its infancy, not only in numbers but in design quality."

However, the city's Department of the Environment says that there are about 500 green roofs either installed or in the development process right now.

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